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drm/amdgpu: Add show_fdinfo() interface

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Tracking devices, process info and fence info using
/proc/pid/fdinfo

Signed-off-by: David M Nieto <David.Nieto@amd.com>
Signed-off-by: Roy Sun <Roy.Sun@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210426062701.39732-2-Roy.Sun@amd.com
This commit is contained in:
Roy Sun
2021-04-26 14:27:01 +08:00
committed by Christian König
parent 1774baa64f
commit 8744425411
11 changed files with 288 additions and 2 deletions
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61
drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
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@@ -651,3 +651,64 @@ void amdgpu_ctx_mgr_fini(struct amdgpu_ctx_mgr *mgr)
idr_destroy(&mgr->ctx_handles);
mutex_destroy(&mgr->lock);
}
void amdgpu_ctx_fence_time(struct amdgpu_ctx *ctx, struct amdgpu_ctx_entity *centity,
ktime_t *total, ktime_t *max)
{
ktime_t now, t1;
uint32_t i;
now = ktime_get();
for (i = 0; i < amdgpu_sched_jobs; i++) {
struct dma_fence *fence;
struct drm_sched_fence *s_fence;
spin_lock(&ctx->ring_lock);
fence = dma_fence_get(centity->fences[i]);
spin_unlock(&ctx->ring_lock);
if (!fence)
continue;
s_fence = to_drm_sched_fence(fence);
if (!dma_fence_is_signaled(&s_fence->scheduled))
continue;
t1 = s_fence->scheduled.timestamp;
if (t1 >= now)
continue;
if (dma_fence_is_signaled(&s_fence->finished) &&
s_fence->finished.timestamp < now)
*total += ktime_sub(s_fence->finished.timestamp, t1);
else
*total += ktime_sub(now, t1);
t1 = ktime_sub(now, t1);
dma_fence_put(fence);
*max = max(t1, *max);
}
}
ktime_t amdgpu_ctx_mgr_fence_usage(struct amdgpu_ctx_mgr *mgr, uint32_t hwip,
uint32_t idx, uint64_t *elapsed)
{
struct idr *idp;
struct amdgpu_ctx *ctx;
uint32_t id;
struct amdgpu_ctx_entity *centity;
ktime_t total = 0, max = 0;
if (idx >= AMDGPU_MAX_ENTITY_NUM)
return 0;
idp = &mgr->ctx_handles;
mutex_lock(&mgr->lock);
idr_for_each_entry(idp, ctx, id) {
if (!ctx->entities[hwip][idx])
continue;
centity = ctx->entities[hwip][idx];
amdgpu_ctx_fence_time(ctx, centity, &total, &max);
}
mutex_unlock(&mgr->lock);
if (elapsed)
*elapsed = max;
return total;
}